Typewriting machine



May '26, 1925. 7 1,539,373

- J. A. B. SMITH TYPEWRITING MACHINE Origina1 Fi1ed Nov. 18 191B 2 Sheets-Sheet 1 May 26, 1925.

J. A. B. SMITH TYPEWRITING MACHINE Original F l d o 18, 1918 2 She ts-Sheet 2 Patented May 26, 1925.

JESSE A. B. SMITH, OF STAMFORD, CONNECTICUT, ASSIGNUE TU UNDER'W 001D UNITED STATES PATENT WRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION tril DER-AWARE.

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Original application filed November 18, 1918, Serial No. 262,939. Divided and this application filed 1, 1922. Serial No. 557,630.

ing Machines, of which the following is a specification.

This invention is a division of my application Serial No. 262,939, filed November 18, 1918, (now Patent No. 1,425,293, dated Au ,gust 8, 1922), and relates principally to typewriting machines of those of the class disclosed in the patent to Wernery and Smith, No. 1,132,055, in which superposed plies of work-web are led to the typewriter carria e from the rear and passed forwardly aroun the platen and upwardly to receive the type impressions. In such machines, the platen is displaceable upwardly after the completion of the typing of each form on the web, to permit the plies of web to be straight ened, so that the carbon-sheets which interleave the plies may be retracted for fresh use. The typed form is then severed from the web.

In some cases, it is desired to retain in the machine a condensed record-sheet, to receive carbon impressions of a succession of bills or forms that are typed upon the main webs; the forms being usually severed from the web one by one after being typed.

An object f this invention is to improve the means for controlling the record-sheet, which usually lies next to the platen, being advanced with the web plies during lineieeding operations, but remaining stationary during the pulling forward of the web preparatory to tearing off the typed form there from.

As herein disclosed, the platen is automatically rotated one, two or three line-spaces during the upward displacement of the platen for permitting the webs to be straight ened out. Since this platen-displacing operation occurs once for every form that is typed upon the web, it results that the rec ord-sheet, which remains in contact with the laten, is automatically advanced thereby, 1ndependently of the plies of web, once for every form that is severed from the web. The record sheet is held against the platen by special feed rolls, which remain effective as the platen rises .to insure the advance of the record-sheet with the platen at this time,

These rolls are preferably placed one on each end of the platen, to run upon the side margins of the record-sheet, whichylor this purpose, may be made wider than the plies ofweb. These rolls may be placed at the front of the platen, so as to bite the record sheet nearly at the printing line, so that about all of the recordsheet may be used, avoiding the necessity of providing excessive blank margins at either top or bottom thereof.

Afeature of this invention is an improvement in the manner of mounting such rolls. They are carried upon the forward ends of arms which extend forwardly from a horizontal rod, which extends along the hash of the carriage and is mounted thereon. These arms may slide along the rod to accommodate sheets of different widths. Moreover,

these special rolls may be released from the laten whenever desired, this being accomplished by means of a key mounted upon the the platen at the position to which it is retated by the line-space mechanism. The line-space mechanism of the Underwood machine usually comprises a slide which carrise a pawl, and said pawl engages the linespace ratchet wheel whenever the slide is pushed backwardly, this usually being accomplished by a lever or handle. As herein disclosed, the platen frame is provided with an arm which engages said slide or a pin thereon, and drives the slide rearwardly for effecting the line-space movement.

Said driving arm, which is connected to the platen frame, maybe so proportioned as to ellect a corn lete driving strbke of said pawl-car'ryin s ide, the same as done by the usual manualy-operated lever, and hence the line-spacing pawl may'remain normally out of engagement with the ratchet wheel, as before, and the usual line-space regulator bib till

lib

may be. employed which controls the duration-of the engagement of the driving pawl and the ratchet wheel, and therefore controls the extent of line-spacing movement of the platen. Thus, the extent of automatic advance of the record-sheet may be regulated.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a perspective front view of an Underwood tgpewriting machine illustrating the class isclosed in said WVernery and Smith patent, and showing my improvements in one form, some of the parts being in normal positions.

Figure 2 is a sectional side elevation of the carriage of said Underwood machine, showing parts in normal positions.

Figure 3is a fragmentary view to illustrate the manner of releasing the rolls which hold the record-sheet upon the platen of the typewriting machine. a

Figure -l is a view showing the platen near the final stage of its upward displacement, and illustrating the manner in which the line-spacing rotating movement of the platen is begun at this stage. Figure 5 is a view showing the parts seen in Figure 2, but illustrating the upward dis placement of the platen as completed, and the line-space operation also as completed.

The plies of web 10 are led in at the rear of the machine, and passed forwardly over a traveling slide 11, which has blades 12 to carry sheets 13 of carbon in between the plies of web, and which may slide forwardly with the plies, and also slide rearwardly, independently of the plies, to feed the carbons fresh positions relatively to the 'webs. The plies with the interleaved carbons pass downwardly around the revoluble platen 14 and between the same and the usual releas able bottom feed-rolls l5, and then upwardly in front of the platen to a position to receive the impression of the types 16.

A sparate sheet 17 is placed next to the platen and is faced with a special carbonsheet 18 which may be carried by said slide, the special sheet receiving the carbon 11npressions of a succession of forms which are typed and then torn oli from the web plies.

r the completion of the typing of a form, the platen is raised or displaced upwardly, to permit the plies to be straightened out preparatory to sliding back the carboncarrier, Figure The platen for these purposes is mounted upon a swinging frame 19, which is hinged at 20 to a main platen frame or carriage 21, so that the platen may be swung upwardly.

Connection between the platen and the usual line-space wheel 22 and platen-r01 ating knob 23 is maintained bymeans of a train of gearing compris ng gears 24, 25,

, spacing slide 29 cape the plies of Web 10, and

masses one rigidly connected to platen frame concentrically with the hinge 20, so that connection'between the line-space wheeland the platen is always maintained.

UfOIl the swingin platen frame 19 is fixe at one end, a riving arm or tappet 27, which at the upward, swinging of the platen engages a pin 28 which projects from a line-s acing slide 29 usually provided upon the Underwood typewriter. By this means, said slide is given a full rearward stroke, the same as it receives from the manuallyoperated lever either bv said driving arm or said operating lever. pon-said slide 29 is theusual pawl 31 for enga' ing the teeth of the line-space wheel 22. 6ther devices are usually found upon this portion of said Underwood, machine, including a stopto prevent overthrow of the pawl, and means to regulate the extent to which the line-spacewheel is rotated by the pawl,- said regulating means including the handle 32, which is usually adjustable to three positions for single, double and triple line-spacing. The extent of the movement of the slide 29 is'the same for all three positions of the line-space regulator 32, and hence the extent to which the platen is automatically rotated at the elevation thereof may be determined by the adjustment of this regulator 32; the slide 29 being given a full stroke in every instance.

en the latch 33 is released that usually holds down the platen-swinging frame 19, and said frame is swung up, an independent regulatable rotation of the platen is automaticallv effected. When the platen is dropped back to printing position, the lineis returned by its usual spring 34. and the parts resume normal posi 30. Said slide is operable tions with the latch 33 resuming its function of holding down the platen frame 19.

p This automatic line-feeding oi the platen serves to advance the record-sheet 17 independent-1y of the webs 10, the side borders of said record-sheet being held -against the platen by means of speclal rolls 35, which esgrip the recordsheet 17 at points near the printing line, avoiding waste of paper.

While other kinds of rolls 35 may be employed and while they may be otherwise placed, it is preferred to place them upon the forward ends of arms 36. which extend forwardly over the top of the platen and are carried upon a horizontal, rod 37 which extends above the platen and is supported in ears 38 provided upon a paper shelf 39, which usually extends upwardly, from thedelivery side of the platen. These arms 36 are preferably adjustable along said rodto ac o m da e different width f recordsheets, or difl'erent positions of the same lengthwise of the platen. To permit the rolls to be released from the platen, the arms at the rear ends are pivoted at 40 upon mounts 41 which slide upon the rod 37 and. are splined thereto. Springs 42 connect the arms with the 1nounts,so that the rolls may always hear as firmly as required against the platen.

For releasing the rolls 35, there is pro vided a special release key 43 upon the end of an arm 44, which is mounted upon a horizontal rock-shaft 45 which extends along the paper shelf 39 and is mounted in the ears 88. Upon this shaft 45 are splined releasing, cams 45 which engage the roll-carrying arms 36 to lift the same upon the operation of the release key 43; the parts being so formed that the roll-carrying arms will be locked in released positions, as at Fig ure 3, by the arm 44 which is arrested by astop 48 on the ear 38. Upon lifting the key, the springs 42 will restore the rolls 35 to engagement with the platen 14. The re leasing cams 46 are forked at 47 to engage the arms 36, so as to be carried along thereby when the arms are adjusted along the rod 37, and hence the release key 43. will serve to release the rolls wherever the arms are adjusted along the platen.

Vwiat-ions may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. In a typewriting machine, the comb.i--

f additional work-sheet on the platen, a worksupport or paper-shelf forming a part of th platen-frame at the delivery side of the platen, and spring-controlled roll-carrying.

arms mounted on the back of said papershelf for adjustmentlongitudinally of the platen and swingable away from the platen, said arms extending overthe top of the paper-shelf and downwardly thereover to the platen to engage the latter 2. In a typewriting machine, the combination with a "platen and a platen-frame which is displaceable on the carriage, of a work-support or paper-shelf forming a part of the platen-frame atthe delivery side of the platen, a rod mounted on the back of the paper-shelf extending along its top, and spring-controlled roll-carrying arms mounted on said rod for adjustment longitudinally of the platen and swingable away from the platen, said arms extending over the top of the paper-shelf 'and downwardly thereover to the platen to engage the latter near the printing line.

3. In a typewriting machine, the combination with a platen and a platen-frame (tit:

which f i'i-w f iin? carriage, of a papenshelf torming a rigid transverse part of the platen-frame at the delivery side of the platen, a rod mounted on the back of the paper-shelf extending along its top, mounts splined on said rod and. longitudinally ad-' justable thereon, arms pivoted on said mounts, and springs connecting the mounts with the arms which are swingab'lc away from the platen, said arms extending over the top of the paper-shelf and downwardly thereover to the platen to engage thev latter under the pressure-of said springs.

4. In a typewriting machine having a platen and a paper shelf at the delivery side thereof, the combination of a rod at the rear'of the paper shelf, mounts. slidable along said rod and splined thereto, springpressed arms pivoted upon said mounts and extending forwardly over said paper shelf, and carrying at'their forward ends rolls to run upon the platen, means to release said arms simultaneously from the platen and mechanically lock them in released positions, a second rod, a release key connected to said second rod, cams splined to said second rod for releasing said arms, and means connecting said cams to said arms to be adjustable therewith.

5. The combination with a paper shelf at the delivery side of the platen, of arms extending downwardly over said paper shelf and having at their bottom ends rolls to turn uponthe platen, a rod extending along said paper shelf at its upper end. said arms adjustable along said rod and supported thereby, a second rod, a release li ey connected to said second rod, cams splinecl to said second rod for releasing said arms, and means connecting said cams to said arms to be adjustable therewith;

6. lhe combination of a platen, a rod er: tending along the platen, arms on said rod and adjustable therealong and having means to press the work against the platen, a second rod, a release key connected to said second rod, cams splined to said second rod for releasing said arms, and means connect ing said cams to said arms to be adjustable therewith.

7. In a typewriter, the combination with a platen and a platen-frame which is mounted on the carriage to displace the platen, of a paper-shelf forming part of the platenframe and extending upwardly from the platen on the delivery side of same, a transverse rod mounted at the rear of the papershelf near the top, roll-carrying arms sup-- ported on said. rod by means of horizontallyshiftable mounts to which the arms are pivoted and connected by springs an arm-releasing rock-shaft also mounted at the rear of said shelf above said rod, said arms curw ing from said mounts around the rock-shaft and downwardly straight over the shelf to till press against the platen, and adjustable means on said rock-shaft engaging the curved parts of the arms to release said arms simultaneously from the platen and to lock them in released positions.

8. In a typewriter, the combination with i a platen and a platen-frame, of a papershelf forming part ofthe platen-frame and extending upwardly from the platen on the delivery side of same, a transverse-rodmounted at the rear of the paper-shelf near the top, roll-carrying arms supported on said rod by means of horizontally-shiftahle mounts to which the arms are pivoted and connected by springs, a rock-shaft also mounted at the rear of said paper-shelf above said rod, said arms curving from said mounts around the rook-shaft over the top of the shelf and downwardly over the shelf to press against the platen, and cams on said rook-shaft engaglng said curved parts of the arms and adjustable together with the latter, to lift said arms simultaneously from the platen and lock them in the lifted positions.-

., JESSE A. B. SMITH.

Witnesses:

MARION R. MCCAFFRE'K, JENNIE P. THORNE. 

